Telephone apparatus for trains.



P. ROBINSON. LEPHONE APPAATUS FOR TRAINS.

APPLICATION FILED MAY 13, 1912,

Patented Aug. 12, 1913.

WTA/fwd sa ns rasoir ROBINSON, or sUDBUaY, oNfrAaio,

CANADA.

TELEPHONE APPARATUS FOR TRAINS.

Specification of Letters Patent. Patented Allg'. 12,1913.

Application filed May 13, 1 912. Serial No. 697,013.

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pole towhieh the free ends of the suppleinental wire are connected.

D is a frame in which is jouriialed a metallic shaft D.

D2 is a sleeveof nected to the shaft.

D3 is a metallic sleeve. E isa spool secured to E- is a 'crank for turning the sha T0 all whom it may concern:

Be. it known that l., 'Pintor RoniNsoN, of the town of Sudbury, in the District of u bury, in the Province of Ontario, Cana a, have inveiitel certain new and useful lmprovements in Telephone Apparatus for Trains, of which the following is a speci Y cation.

M v invention relates to improvements inf telephone'apparatus for trains, and the ob- `iect of my invention is to provide a supple` mental connectionbetween that portion o the telephone circuit located in the train an the main/line, which connection will at all times he insulating material contlie shaft D.

ft D.

D4 is a-contact finger having a wiping conta ct against the shaft D. The contact finger D4 is secured to the frame D by a suitable insulating connection vD6 is a similar finger lia-ving a. wiping connection against the sleeve D. The finger D is con-` nected to the frame l) by a suitable insulatii'i connection i-leading from 'be connected to thatpoition of t telephone circuit inthe train and which at the saine time can be readily 7. The wire wound into a coil when connecting the free thetelephone is connected to the finger o the and the wire'l is connected to the finger D.

end of vthe supplemental connection lemental wire comprising two inain line connections an it consists essen- .F is a supp tially of a shaft journaled in a suitable lines F and F2 connected respectively to. the.

' frame, an insulating sleeve secure o the binding post F3, bearing against the sleeve Ff bearing agains which one terminal o f the tele D3 and the binding post the shaft D. are provided designed to be connecte on the vportable special the shaftfrom rotating 'a pivotally connecte V"to" a standard eX- tending rein the main f .The fork of the arm G extends to each side of the flattened "portion ID9 .of-the shaft D', thus presha ft and a metallic sleeve supported around the insulating sleeve, a spool mounted on the shaft, a suitable contact finger having a` wiping contact with the shaf hone circuit is connected, a contact finger having a wipmetallic sleeve and-` to which the other end of the telephone circuit is connected, a supple- The opposite ends of the lines with suitable connections,

d to the connections line pole. forked arm Gr is mental wire connect-ing one line thereof being electrically connected to the shaft and venting the rotation of the shaft.

the other line thereof being electricallyr con- When it is desired to use the telephone nected to the metallic leeve as hereina er all that is necessary is to stop the train a more particularly describe by t e follow- .a point where the distance between the train is not greater ing specification.

and the aerial telephone wires than the length of the supplemental wire The arm `Gr is then thrown free of the shaft and the free ends of the supplemental wire F is carriedoutwardly through a suitre 1, is lan end elevation of the tra-in andtelephone post having wire extending between the aerial telephone wires through the port Figu special line pole. Fig. 2, is a reduced secable opening in the train and attached to tional detail of the supplemental wire win the connections on the lower end of the ing apparatus. Fig?) is a detail of the lock portable special line pole which is then ing arm hooked on to the aerial telephone wires, a sufficient length of the supplemental wire In the drawings like letters of reference indicate corresponding ts in each figure.

par being unwound for is done the person can Vreturn A represents a train having the usual teleto the train hone apparatus B from which exten the and rewind the supplemental wire F s ufusual circuit wires 2 and {iciently to keep it off the ground replacing C is a telephone pos on which is supthe locking arm Gr which will hold the supported in the usua manner the line wires. lemental wire as taut as desired, constant C is a portable special line pole with two electrical connection to the train telephone hooks to engage with the aerial line wires, being retained in all positions of the spool. connection being made between lthe hooks After the telephonie conversation is 'i ished thefspecial pole is unlocked from the the lower pa To lock laerial wires, the supplemental Wire disconnected from the special pole and rewound on the spool.. f

-From this description it will be seen that I have devised a very'simple means whereby aconnection is maintained between the supplemental wire and the telephone circuit, which may be readily wound or unwound when making and breaking connec-v tion between the supplemental Wire and the main llne. connection.

What I claim as my invention 1s:

1. In-the .telephone apparatus for trains,y

the combination with the-circuit wires of the telephone and the main line wire con- .nections, of a suitable shaft' located in a train, a spool mounted thereon, Aan insulating sleeve secured to the shaft, a metallic sleeve lon the insulating sleeve, a supplemental wire .comprising a line electrically f connected to the shaftl and a line electrically connected to the sleeve, a finger bearing on the shaft and to which one terminal of the telephone circuit is connected, a. Iinger having a wiping connection with the sleeve and to which the other terminal of the telephone circuit is connected, and an operating crank secured to the shaft, and means for locking the shaft in a stationary position as andv mental wire comprising a line electrically connected to the shaft and a line electrically connected to the sleeve, a finger bearing on the shaft and to which one terminal of the telephone circuit is connected, a nger having a wiping connection with the sleeve and to which the other terminal of the telephone circuit is connected, an operating crank secured to the shaft and a swinging arm designed, to engage with a suitable portion of the shaft, as and for the purpose specified.

3. In---- ain telephone apparatus the combination w1th"`the telephone circuit .wires and the main wire line connection, a.

suitable supporting frame located in atrain, a shaft rotatably' mounted in said frame, a wire holding spool carried by said shaft an insulating sleeve surrounding a portion of said shaft, a conducting sleeve surrounding said 'insulating'sleeva a supplemental wire 'comprising a line electrically connected to the shaft-and a to the sleeve, a finger bearing on thed shaft to which one terminal of the telephone circuit is connected, a finger having a wiping connection with said conducting sleeve and to which the otl1er\ terminal of the telephone circuit is connected, both of said lingers being supported from said framel` an operating handle connected to said shaft, and means 'for locking the shaft against rotation.

rimer vRoniNsoNl lVitncsses i BERTIE CARROLL, I. B. CRABBE.

Copies of this patent may be obtained for five cents each,

by addressing the Commissioner of Patents,

Washington, D. 0.-

line electrically connected 

